Joint prosthesis thigh bone prosthesis and preparation method for same

A technology of femoral prosthesis and artificial joint, applied in the direction of prosthesis, femur, joint implants, etc., can solve the problems of unstable long-term fixation effect, poor bone ingrowth effect, and rehabilitation after surgery failure, so as to maintain effective mechanical Support, high mechanical strength, reduce the effect of stress shielding

Pending Publication Date: 2017-10-17
JINGWEI MEDICAL EQUIP MFG SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing artificial joint femoral prosthesis either uses additive manufacturing technology to form a certain rough surface on the artificial joint femoral prosthesis body, or uses subtractive manufacturing technology to generate holes and other structures on the artificial joint femoral prosthesis body. The artificial joint femoral prosthesis and bone prepared by additive manufacturing technology or subtractive manufacturing technology have poor bone ingrowth effect, insufficient fusion, and unstable long-term fixation effect, which may lead to operation failure or poor postoperative rehabilitation in severe cases

Method used

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  • Joint prosthesis thigh bone prosthesis and preparation method for same
  • Joint prosthesis thigh bone prosthesis and preparation method for same
  • Joint prosthesis thigh bone prosthesis and preparation method for same

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preparation example Construction

[0019] In the preparation method of the artificial joint femoral prosthesis of the present invention, various processing methods are used to generate holes or grooves on the artificial joint femoral prosthesis body, and then the column process, spherical process or Other three-dimensional shapes.

[0020] The various processing methods are any processing methods known in the art that can form holes or grooves on the main body of the artificial joint femoral prosthesis, such as casting, forging, laser melting, acid etching and the like.

[0021] The additive manufacturing technology is preferably but not limited to 3D printing.

[0022] The artificial joint femoral prosthesis body is preferably but not limited to be made by vacuum dewaxing casting or forging of biocompatible metal materials, wherein the biocompatible metal materials are preferably but not limited to titanium alloys, cobalt-chromium alloys, Among them, titanium alloys include Ti-8Fe-8Ta-4Zr. Compared with tradi...

Embodiment 1

[0024] An artificial joint femoral prosthesis, the preparation method of which comprises: using cobalt chromium molybdenum alloy to manufacture the artificial joint femoral prosthesis body by vacuum dewaxing casting, and then adopting the laser melting method to bond the artificial joint femoral prosthesis body and human bone for a long time Holes or grooves are formed on the surface of the contact part, and then 3D printing is used to construct columnar protrusions, spherical protrusions or other three-dimensional shapes in the holes; the laser melting method adopts the existing technology to make the holes with a diameter of 50 μm and a depth of 25 μm, so that the grooves The width is 50 μm, and the depth is 25 μm; the 3D printing technology adopts the existing technology to make the height of the pillars, spherical protrusions or other three-dimensional shapes be 2 μm.

Embodiment 2

[0026] An artificial joint femoral prosthesis, the preparation method of which comprises: using cobalt chromium molybdenum alloy to manufacture the artificial joint femoral prosthesis body by vacuum dewaxing casting, and then adopting the laser melting method to bond the artificial joint femoral prosthesis body and human bone for a long time Holes or grooves are formed on the surface of the contact part, and then 3D printing is used to construct columnar protrusions, spherical protrusions or other three-dimensional shapes in the holes; the laser melting method adopts the existing technology to make the holes with a diameter of 10000 μm and a depth of 5000 μm, so that the grooves The width is 10,000 μm, and the depth is 5,000 μm; the 3D printing technology adopts the existing technology, so that the height of the pillar, spherical protrusion or other three-dimensional shape is 6,000 μm.

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Abstract

The invention discloses a preparation method for a joint prosthesis thigh bone prosthesis. The method comprises the following steps of generating holes or slots on a joint prosthesis thigh bone prosthesis body via various processing methods, and building column projections, spherical projections or other stereoscopic shaped-projections in the holes or the slots via additive manufacturing technology. A lockmaking action can be achieved between implantation material and a bone tissue, so an ideal spatial structure can be provided for growth of new bone; bone tissue cell adhesion and proliferation abilities can be improved and great bone combination can be realized; fusion property between joint prosthesis thigh bone prosthesis and self-tissues can be enhanced; the joint prosthesis can effectively play a role for long time in a human body; and the joint prosthesis thigh bone prosthesis has excellent mechanical property and high mechanical strength, can decrease stress block and maintain effective mechanical support.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an orthopedic implant artificial joint femoral prosthesis and a preparation method thereof. Background technique [0002] Artificial joint disease caused by disease and trauma is a common clinical disease and one of the worldwide problems in orthopedic treatment, seriously affecting the quality of life of patients. Artificial joint femoral prosthesis is a common orthopedic material in clinical application. The wide application of artificial joint femoral prosthesis in orthopedic treatment has significantly improved the problems that could not be solved clinically in the past, and the success rate of implantation has also reached quite satisfactory results. The existing artificial joint femoral prosthesis either uses additive manufacturing technology to form a certain rough surface on the artificial joint femoral prosthesis body, or uses subtractive manufacturing technolo...

Claims

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Application Information

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IPC IPC(8): A61F2/30A61F2/28
CPCA61F2/28A61F2/30A61F2/30942A61F2002/2825A61F2002/30784A61F2002/3093A61F2002/30891A61F2002/30827A61F2002/30985A61F2002/30957
Inventor 吴栋
Owner JINGWEI MEDICAL EQUIP MFG SHENZHEN CO LTD
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